	US 11,994,600 B2
	Reception apparatus and reception method
Hidetoshi Kawauchi, Kanagawa (JP); and Toru Katsumoto, Kanagawa (JP)
Assigned to SONY SEMICONDUCTOR SOLUTIONS CORPORATION, Kanagawa (JP)
Appl. No. 17/289,048
Filed by SONY SEMICONDUCTOR SOLUTIONS CORPORATION, Kanagawa (JP)
PCT Filed Sep. 30, 2019, PCT No. PCT/JP2019/038553 § 371(c)(1), (2) Date Apr. 27, 2021, PCT Pub. No. WO2020/095574, PCT Pub. Date May 14, 2020.
Claims priority of application No. 2018-209591 (JP), filed on Nov. 7, 2018.
Prior Publication US 2021/0405214 A1, Dec. 30, 2021
Int. Cl. G01S 19/45 (2010.01); G01S 19/03 (2010.01); G01S 19/22 (2010.01); G01S 19/39 (2010.01); G06F 1/16 (2006.01)

CPC G01S 19/45 (2013.01) [G01S 19/03 (2013.01); G01S 19/22 (2013.01); G01S 19/396 (2019.08); G06F 1/163 (2013.01)]

7 Claims

1. A first reception apparatus, comprising:

a positioning calculation unit; and

an altitude information acquisition unit configured to:

acquire, from a plurality of reception apparatuses via proximity wireless communication, a plurality of pieces of altitude information calculated in the plurality of reception apparatuses, wherein

the plurality of reception apparatuses excludes the first reception apparatus, and

each of the plurality of pieces of altitude information indicates an altitude of a corresponding reception apparatus of the plurality of reception apparatuses;

acquire a plurality of pieces of altitude reliability information from the plurality of reception apparatuses via the proximity wireless communication,

wherein each of the plurality of pieces of altitude reliability information indicates a reliability of the altitude of the corresponding reception apparatus of the plurality of reception apparatuses;

select, based on the plurality of pieces of altitude reliability information, a second reception apparatus of the plurality of reception apparatuses having a highest reliability of the altitude among the plurality of reception apparatuses; and

supply a piece of altitude information of the plurality of pieces of altitude information of the selected second reception apparatus to the positioning calculation unit,

wherein the positioning calculation unit is configured to:

compute, in a case where four or more global navigation satellite system (GNSS) signals have been received, positioning based on the GNSS signals; and

compute, in a case where three or less of the GNSS signals have been received, the positioning based on the GNSS signals and the piece of altitude information of the selected second reception apparatus supplied from the altitude information acquisition unit.